360 vs 383

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Killer6 said:
Lol! The stroke favors the torque,...not! To be sure, if You have low squeeze, it's gonna dog....but that goes for both. My 383 was a '66, so I was ahead with closed-chamber heads and 9.2:1 comp., I put 1.74 Exh valves in and used the porting templates from DC. With an old-school Eddy DP4B, a run of the mill Holley 750 VS, 284/.484 DC cam & headers, I was doing 102+mph in a car that weighed in at about 3700#. Budget, re-ring with the original pistons, rods, crank, stock OE valves, green Hemi valve springs, used headers, shim head gaskets. I love SBs in A-Bodies, but 383 over 360 all day long, there's not that much diff in weight in a big car low-deck to LA360. X heads will out-flow B/RB heads, bone stk., but not all, and BUDGET seems to keep getting lost in this thread...price good X-heads lately?
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X's an J's go cheap now days,..errybody tossing them for aluminum!!!
 
Garrett Ellison said:
I bet that worked really well. How much compression and what kind of vehicle did you have it in? What transmission and gears? Did you ever get it to the track?
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It was one of the engines I used in my 67 fastback. It has a torque flight and at the time I was using a B+ M 3500 with 4.57 gear.
Had ported 915 heads with Holley street dominator and carter comp 750. compression was 11.1 or so. we didn't measure back then 1979/ 80 lol In strip tune with slicks it would run consistent 11.50's at 114.
 
junkyard 360 magnum , clean up the bores and polish the crank yourself , all stock 9.1 to 1 shortblock under $500. EQ magnum heads, china airgap , reground roller cam ,400hp under 2 grand , you will never find a 383 or 360la core that doesńt need hundreds of dollars in machine work , new pistons ,bore ,balance etc.
 
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Mostly since I am accumulating magnum 360's for free to super cheap I'm probably going with the 360. Especially in a street car. Seems like 3k gets me a pretty damn good small block.

Don't forget cheaper easier overdrive auto options for the small block as well.


When using a b engine i try to stick with 400's RB's a 440 and la/magnums a 360. Just because my budget is tight and displacement makes a difference for low buck builds.
Sorry if too far off topic but if I was serious about going fast and don't mind the weight of the big block 3k gets me a mild 440 with more potential than the 3k 383.
 
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